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Consensus of the Hellenic Headache Society on the diagnosis and treatment of migraine


More than 0.6 million people suffer from disabling migraines in Greece causing a dramatic work loss, but only a small proportion of migraineurs attend headache centres, most of them being treated by non-experts. On behalf of the Hellenic Headache Society, we report here a consensus on the diagnosis and treatment of adult migraine that is based on the recent guidelines of the European Headache Federation, on the principles of Good Clinical Practice and on the Greek regulatory affairs. The purposes are three-fold: (1) to increase awareness for migraine in Greece; (2) to support Greek practitioners who are treating migraineurs; and (3) to help Greek migraineurs to get the most appropriate treatment. For mild migraine, symptomatic treatment with high dose simple analgesics is suggested, while for moderate to severe migraines triptans or non-steroidal anti-inflammatory drugs, or both, should be administered following an individually tailored therapeutic strategy. A rescue acute treatment option should always be advised. For episodic migraine prevention, metoprolol (50–200 mg/d), propranolol (40–240 mg/d), flunarizine (5–10 mg/d), valproate (500–1800 mg/d), topiramate (25–100 mg/d) and candesartan (16–32 mg/d) are the drugs of first choice. For chronic migraine prevention topiramate (100-200 mg/d), valproate (500–1800 mg/d), flunarizine (5–10 mg/d) and venlafaxine (150 mg/d) may be used, but the evidence is very limited. Botulinum toxin type A and monoclonal antibodies targeting the CGRP pathway (anti-CGRP mAbs) are recommended for patients suffering from chronic migraine (with or without medication overuse) who failed or did not tolerate two previous treatments. Anti-CGRP mAbs are also suggested for patients suffering from high frequency episodic migraine (≥8 migraine days per month and less than 14) who failed or did not tolerate two previous treatments.


Migraine is the third most prevalent disorder in the world [1] and the first cause of disability in under 50s [2]. Almost three billion individuals were estimated to have migraine or tension-type headache (TTH) in 2016 (1·89 billion with tension-type headache and 1·04 billion with migraine). However, because migraine has a much higher disability burden than TTH, migraine caused 45·1 million (95% UI 29·0–62·8) and TTH only 7·2 million (95% UI 4·6–10·5) YLDs (Years of Live lived with Disability) globally in 2016 [1]. In Europe, the mean per-person annual costs were €1222 for migraine and €3561 for medication-overuse headache, that usually comorbid with chronic migraine, indicating that migraine is a prominent health-related driver of economic losses for the European Union [3]. In Greece about 610.000 suffer from disabling migraines and 283.500 from disabling TTH. Headache sufferers report headache-induced reductions in performance around 3 days/month and only one out of five seek professional treatment for headaches, a private neurologist most often. Interestingly, the vast majority of Greek headache sufferers have never taken prophylaxis for headaches [4]. These findings prompted Hellenic Headache Society (HHS) to initiate a network of headache centres that should manage headache sufferers appropriately. In this light, the consensus outlined here represents an additional effort of the HHS to provide a practical tool including both established and novel treatments for headache and migraine in particular, which can easily be used by Neurologists, General Practitioners and any other health professional involved in headache medicine.


The present consensus was drafted by a group of members of the Hellenic Headache Society, in three consecutive meetings followed by four email rounds to establish the final document which was approved by all members of the panel. The recommendations of the European Headache Federation (EHF) for technical investigation for primary headache disorders [5] and for treatment of migraine [6, 7] were the bases for adaption into the national environment. The European Federation of Neurological Societies (EFNS) recommendations for migraine [8] and medication overuse headache [9] were reviewed and additional literature search was performed for updating the treatments, following the methodology described by EFNS task forces. The patients’ preferences obtained in a previous study performed by the HHS [10] were also taken into consideration, together with the National Pharmacy Affairs rules for treatment reimbursement. Migraine diagnosis and classification follows ICHD-3 [11].

Migraine diagnosis

The diagnosis of migraine is based on the history given by the patient, as well as the normal clinical examination. Only in selected cases is brain imaging required (Table 1) [5]. As no biomarkers exist, taking the patient’s medical history remains the most important part of the diagnostic procedure. The presence of particular features often requires paraclinical evaluation to exclude secondary headaches (Table 2). The HHS advises the use of a semi-structured interview to avoid forgetting important information leading to misdiagnosis. An electronic patient interview and database has been developed by the HHS and is available for headache centers and other physicians who treat headaches in Greece to interview and follow up headache sufferers. Briefly, a number of questions, regarding headache onset, duration, localization, severity (rated in a 11 point visual analogue scale-VAS) and frequency, the pain characteristics, the pattern and the possible trigger causes of headache should be routinely asked. Specific scales to scan for potential affective disorders, e.g. the Hamilton depression and anxiety rating scale are significant [12], together with a list of questions related with disorders of the other body systems. Scales for quality of life changes due to headache (e.g. the Migraine Disability Assessment Test- MIDAS [13], the Headache Impact Test-HIT-6 [14]), that also rate the headache impact and severity are recommended for both the first visit and the follow-up. Likewise, a patient’s headache diary is of great importance for both diagnosis and follow-up. Headache diary, MIDAS (validated in Greeks [13]), HIT-6 [14] (not validated, translated into Greeks) and Hamilton scales (validated in Greeks [15]), are all available upon request from the HHS. Apart from the detailed interview the complete neurological examination should be normal. Physical examination, including blood pressure, body mass index calculation and fundoscopy for papilledema are recommended as well.

Table 1 Tests recommended for migraine
Table 2 Clinical features warning of a possible underlying disorder

Treatment of migraine

The management of migraine is multidisciplinary involving pharmaceutical and non-pharmaceutical procedures that are all important and necessary. Here we report suggestions for the pharmaceutical treatment of migraine that is divided into symptomatic and prophylactic. We also cover the potential use of neurostimulation and food supplements as treatment options. No safety issues are covered but we address, of course, particular considerations when it is appropriately significant.

Symptomatic treatment of migraine

Patients should be advised to receive the symptomatic treatment as soon as they are sure that they are experiencing a migraine attack. Intake of acute medications for migraine must not exceed the 10 days per month for ergotamine, triptans or combinations of drugs, or the 15 days per month for NDAIDs, paracetamol and aspirin, to avoid medication overuse headache. However, we suggest stricter limits to safeguard more (see Medication Overuse Headache Section). Simple analgesics (paracetamol and aspirin, alone, or in combinations, with or without caffeine) are recommended at high doses (e.g. 1 g of paracetamol, or aspirin, per os) for acute treatment of migraines that are typically mild in severity and duration (e.g. rating less than 6/10 in VAS and lasting less than 12 h) [8]. Before intake of non-steroidal anti-inflammatory drugs (NSAIDs) and triptans, oral metoclopramide or domperidone may be useful when migraineurs experience nausea in particular. For the mild to severe migraine attacks, oral NSAIDs and triptans are suggested [8]. There is good documentation (level A) for naproxen (500-1000 mg), ibuprophen (200-800 mg) and diclofenac (50-100 mg), and for tolfenamic acid (200 mg, level B). We do not suggest following the concept of stratified treatment as EFNS Task Force suggests, however [8]. We believe that a therapeutic plan tailored to the individual patient is more efficient, saves time and fits better to the good clinical practice rules. The personal medical history of each patient will guide the physician to the right decision-making. For severe migraine attacks (e.g. menstrual migraine) subcutaneous sumatriptan is recommended.

Headache may recur within 24 or even within 48 h after successful treatment (meaning pain free 2 h post treatment) with triptans [16]. One to four out of 10 patients taking an oral triptan experience recurrence [16]. A second dose of the triptan is often effective but only in case the headache recurs. On the contrary, physicians should clarify to their patients that if the first dose of a triptan does not work, a second dose is useless [17]. Interestingly, there is good documentation (level A) that combining a NSAID with a triptan (naproxen 500 mg with sumatriptan 85 mg, or sumatriptan 100 mg since in Greece this dosage is not available) reduces headache recurrence and improves efficacy [18,19,20]. Not all patients are candidates for all of the above treatment suggestions, since there are several contraindications and significant safety issues [21] that this report does not cover (Table 3).

Table 3 Use of simple analgesics, NSAIDs, triptans or combinations for the symptomatic treatment of migraine

Because the consistency of all available symptomatic treatments is limited, all migraineurs should be advised for rescue treatment. The HHS emphatically recommends this in order to limit both the unnecessary hospital admissions and the patients’ long suffering. Rescue treatment should be offered when 2 h post treatment there is no pain relief and should be parenteral for quicker drug absorption and efficacy and because at this late stage of a migraine attack gastric stasis may occur. Apart from subcutaneous sumatriptan, the NSAIDs suppositories are suggested, since no other formulations are currently available in Greece. Intramuscular diclofenac 75 mg may be given as rescue medication at home [22], as well. Status migrainosus can be treated by intravenous cortoicosteroids, although this has not universally been proved to be helpful [8]. Other options include intravenous valproate [23] and a combination of intravenous tramadol with paracetamol [24]. Intravenous metoclopramide alone does not seem to help [25], although there is good evidence for a combination of metoclopramide 10 mg and aspirin 1 g for the symptomatic treatment of migraine, given per os, at home [26]. Because of lack of evidence demonstrating efficacy and major concern about sub-acute or long-term sequelae, injectable morphine and hydromorphone should best be avoided [27]. Generally, HHS suggests avoiding the use of narcotics for migraine treatment, either for acute or for prophylactic treatment (with the exception of tramadol in a hospital setting, in a few selected cases).

Prophylactic treatment of migraine

When migraine is disabling and/or the attacks are intractable, prophylactic treatment is suggested. The prevention of migraine chronification is the most important part of migraine management and includes not only the pharmaceutical treatment of migraine but also the treatment of potential comorbidities, such as depression-like conditions and obesity [28]. There is not a cut off threshold of the number of migraine days per month that requires prophylactic treatment. The treating physician decides along with the patient upon the disability and the comorbidities that the specific patient may suffer from. To make a more tailored choice of medication for migraine prevention, HHS suggests the sub-classification of episodic migraine into low (< 8 migraine days per month) and high frequency (8–14 migraine days per month) episodic migraine. By this sub-classification the new emerging treatments (e.g. the anti-CGRP monoclonal antibodies) fit better to the suggested therapeutic algorithm.

Episodic migraine

For the prevention of episodic migraine (EM) the HHS accepts the EFNS task force recommendations [8]. The drugs of first choice with level A documentation are metoprolol (50–200 mg/d), propranolol (40–240 mg/d), flunarizine (5–10 mg/d), valproate (500–1800 mg/d) and topiramate (25–100 mg/d). Drugs of second choice with level B documentation are amitriptyline (50–150 mg/d), venlafaxine (75–150 mg/d), naproxen (500–1000 mg/d) and new purified formulation of petasites (150 mg/d). Angiotensin II receptor blocker candesartan (16-32 mg/d) should be added to the list of first choice medications [29, 30]. There is margnial documentation for several other agents that have been tested for the prevention of EM (third choice drugs) [8]. For the high frequency EM prevention, HHS follows the EHF recommendations and suggests the use of anti-CGRP monoclonal antibodies (anti-CGRP mAbs) as second choice after the failure of two first choice agents (Table 4).

Table 4 Use of anti-CGRP monoclonal antibodies for migraine prevention

Chronic migraine

For the prevention of chronic migraine (CM), HHS suggests the use of first choice drugs recommended for the prevention of EM, with emphasis to topiramate, valproate, flunarizine and venlafaxine. Topiramate 100 mg/d has little documentation for CM [31, 32]. In addition it can be used as a stabiliser for mood disorders [33] like valproate [34], but the latter has, or should have, very limited use in young females [35]. Venlafaxine is a typical antidepressant and affective disorders are very often comorbid with chronic migraine and/or MOH [12], thus its use could be helpful when anxiety and/or depressive symptoms are present in patients with CM. Flunarizine showed efficacy in CM in one small size, open label, trial [36]. No combination of topiramate and propranolol is recommended for the prophylactic treatment of CM [37]. However, botulinum toxin type A (BTXA) and the anti-CGRP mAbs share the best documentation for the prevention of CM (level A). Following the EHF recommendations [6, 7], the HHS suggests the use either of BTXA, or anti-CGRP mAbs (erenumab, fremanezumab, or galcanezumab), for those patients who have tried two previous prophylactic treatments for CM (topiramate and flunarizine and/or venlafaxine when depression like symptoms are detected), but they did not tolerate them, or their migraines did not improve. For the use of anti-CGRP mAbs and BTXA in CM see Tables 4 and 5, respectively. Both drug classes are safe and well tolerated [38,39,40]. Notably, the documentation of the first line suggested prophylactic treatments for CM is very poor or even empirical. However, the Greek Authorities demand failure to first line prophylactic treatments to reimburse BTXA. In order for the Greek doctors to comply with this requirement, they may use topiramate (100-200 mg/d), flunarizine (10 mg/d) or venlafaxine (150 mg/d) as first line treatments.

Table 5 Use of botulinum toxin A (BTXA) in chronic migraine

Medication overuse headache

Medication overuse headache (MOH) occurs by definition in chronic migraine [11], although drug overuse may occur in patients suffering from high frequency episodic migraine as well. Prevention of migraine chronification stands as the most important issue in migraine management, as stated previously. As soon as MOH appears immediate treatment is required, which includes patient education to reduce medication intake, discontinuation of the overused medication and individual prophylactic treatment [9, 41]. Whether abrupt withdrawal or tapering down of overused medication is better depends on the patient’s personality and potential comorbidities he/she may suffer from and it is not related to outcome [9]. Inpatient withdrawal therapy may be needed, in particular for patients overusing opioids, benzodiazepines, or barbiturates [9] (Table 6).

Table 6 Management of Medication Overuse Headache (MOH)

There is moderate evidence for the prophylactic treatment in patients with CM and medication overuse with topiramate up to 200 mg [9]. Corticosteroids (at least 60 mg prednisone or prednisolone) and amitriptyline (up to 50 mg) are possibly effective in the treatment of withdrawal symptoms [9]. However, prophylactic treatment with BTXA and anti-CGRP mAbs also improve MOH and should be suggested [6, 7] (Tables 4 and 5) in patients who do not need hospitalization. Not only migraine, but all potential comorbidities should be evaluated and treated accordingly to prevent from MOH recurrence. Because anxiety and depression like symptoms are very common in patients overusing drugs for symptomatic treatment of migraine [12], treatment with venlafaxine 150 mg/d that also improves both TTH [42, 43] and migraine may be helpful. Non-pharmaceutical interventions, including cognitive behavioral treatment are also recommended. A large proportion of patients suffering from MOH often relapse [41] thus close follow-up is recommended.

Neurostimulation for migraine treatment

Neurostimulation is a novel promising therapeutic approach that helps patients with migraine. Patients in Greece prefer this approach in particular [10] and treating physicians should be aware of these techniques that are divided into invasive and non-invasive approaches. Here we discuss the application only of the non-invasive devices, since the invasive ones require management in a tertiary headache center exclusively [44], such as the vagus nerve stimulation (VNS), the external trigeminal nerve stimulation (eTNS), and the transcranial magnetic stimulation (TMS). In Europe several devices carry the CE mark, among them only four devices have low to moderate evidence for treatment of migraines [45]. The device of the VNS for the symptomatic treatment of migraine [46], the single transcranial magnetic stimulation (sTMS) for the symptomatic treatment of migraine with aura, the repetitive transcranial magnetic stimualtion (rTMS) for the prophylactic treatment of episodic migraine [47] and the eTNS for both the symptomatic and prophylactic treatment of episodic migraine [48, 49]. Thus, migraineurs may use these devices although they are not reimbursed in Greece currently.

Dietary supplements for migraine treatment

Several randomized clinical trials (RCTs) suggest dietary and vitamin supplementation and different herbs effectiveness in the treatment of migraine, although several methodological shortcomings, especially lack of comparison with standard treatment and placebo, have been noticed [50]. Coenzyme Q10, magnesium citrate, petasites and riboflavin share low to moderate documentation and could be used for migraine prevention when patient preferences exclude pharmacotherapy. There is limited evidence that prophylaxis with combination of simvastatin (40 mg/d) with vitamin D (1000 Units/d) may help patients suffering from episodic migraine [51]. Other combinations may be useful as well, but the evidence for efficacy is limited. When a patient refuses pharmacotherapy, in particular those patients with negative previous experiences or expectations, e.g. patients with nocebo behaviours [52, 53], HHS suggests the use of dietary supplements to improve migraines. Cognitive behavioural treatment is also effective, not only in these patients, but in those co-suffering from any affective disorder as well [54].


Migraine is a disabling disease requiring effective treatment. Diagnosis of migraine remains clinical and only in a few cases testing is needed to exclude secondary headaches. HHS suggests taking the interview carefully, based in a semi-structured questionnaire, to cover all aspects of headache features and to follow-up patients with headache diaries. Specific scales to assess headache burden and comorbidities are also suggested, along with a specifically designed database for headache follow-up. For therapeutic decision making physicians should take into account the individual migraine impact and/or disability, potential comorbidities and patient’s personal preferences. HHS expresses two major suggestions: adding a rescue medication in the symptomatic migraine treatment and introducing early prophylactic treatment to prevent migraine chronification and medication overuse. For mild migraines, symptomatic treatment with high dose simple analgesics is suggested, while for mild to severe migraines triptans or NSAIDs, or both, should be administered following an individual tailored therapeutic strategy. Rescue medications should be administered parentally (e.g. sumatriptan subcutaneously). For the prevention of episodic migraine, metoprolol (50–200 mg/d), propranolol (40–240 mg/d), flunarizine (5–10 mg/d), valproate (500–1800 mg/d), topiramate (25–100 mg/d) and candesartan (16–32 mg/d) are the drugs of first choice. For chronic migraine prevention topiramate (100-200 mg/d), valproate (500–1800 mg/d), flunarizine (5–10 mg/d) and venlafaxine (150 mg/d) may be used, although the evidence is very limited. Botulinum toxin type A and anti-CGRP mAbs are recommended for patients suffering from chronic migraine (with or without medication overuse) who failed or did not tolerate two previous first choice treatments. Anti-CGRP mAbs are also suggested for patients suffering from high frequency episodic migraine who failed or did not tolerate two previous first choice treatments. Because many migraine sufferers prefer treatment with neurostimulation in Greece, treating physicians should be familiar with these techniques. There is limited but promising evidence for the use of VNS for the symptomatic treatment of migraine, sTMS for the symptomatic treatment of migraine with aura, rTMS for the prophylactic treatment of episodic migraine and eTNS for both the symptomatic and prophylactic treatment of episodic migraine. Dietary supplements may be useful for those refusing pharmacotherapy. Almost all patients would benefit from cognitive behavioural treatment, but only those who prefer and withstand it are good candidates. Safety issues and patients’ adherence is of great importance in treatment monitoring. Overall, migraine is a treatable disease that needs particular care. Patients may benefit only if treated appropriately after medical consultation. For refractory cases physicians may refer their patients to the Headache Centres established by the HHS.

Availability of data and materials

There are no original data.


Anti-CGRP mAbs:

Monoclonal antibodies targeting the CGRP pathway


Botulinum toxin type A


Calcitonin gene-related peptide


Chronic Migraine


European Federation of Neurological Societies


European Headache Federation


Episodic Migraine


External trigeminal nerve stimulation


Hellenic Headache Society


Headache Impact Test


International Classification of Headache Disorders-3


Monoclonal antibodies


Migraine Disability Assessment Test


Medication overuse headache


Non-steroidal anti-inflammatory drugs


Randomized clinical trials


Transcranial magnetic stimulation


Tension-type headache


Visual analogue scale fro pain


Vagus nerve stimulation


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There are no acknowledgments.


This article is a Consensus Article from experts in the topic appointed by the Hellenic Headache Society to support Greek physicians who treat headaches.


This work was not founded. The Hellenic Headache Society covered the publication fees.

Author information

EK participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and has drafted the manuscript. CA participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and reviewed the manuscript. TSC participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and reviewed the manuscript. EG participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and reviewed the manuscript; NF participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and reviewed the manuscript; TK participated in the conception, the design of the work, the acquisition, analysis, interpretation of data and reviewed the manuscript; EK participated in the conception and reviewed the manuscript; ND participated in the acquisition, analysis, interpretation of data and has drafted the manuscript; DDM participated in the conception, the design of the work, the acquisition, analysis, interpretation of data, has drafted and reviewed the manuscript; All authors have approved the submitted version (and any substantially modified version that involves the author’s contribution to the study); and have agreed both to be personally accountable for the author’s own contributions and to ensure that questions related to the accuracy or integrity of any part of the work, even ones in which the author was not personally involved, are appropriately investigated, resolved, and the resolution documented in the literature.

Correspondence to Dimos D. Mitsikostas.

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Ethics approval and consent to participate

Ethics approval and consent to participate was not needed for this consensus.

Consent for publication

All authors have reviewed the final version and gave their approval for publication.

Competing interests

  • Dr. Evangelos Kouremenos has received advisory fees and travel grants from Novartis, Merck, Sanofi, Genesis, TEVA, Specifar, Pharmathen and Innovis.

  • Dr. Chrysa Arvaniti has received honoraria and travel grants from Novartis, GlaxoSmithKlin and Teva pharmaceuticals.

  • Dr. Theodoros S Constantinidis has received advisory fees, honoraria, research grants, or travel grants from Allergan; Bayer; Braintherapeutics; C.A. Papaellinas, Elpen, Genesis Pharma; Merck, Novartis; Pharmathen; Roche; Sanofi-Genzyme; Teva Pharmaceuticals; and UCB. He is the current vice-president of the Hellenic Headache Society and has no ownership interests and does not own any pharmaceutical company stocks.

  • Dr. Ermioni Giannouli has no disclosures.

  • Dr. Nikolaos Fakas has received consultation, speech honoraria, travel grants, clinical research support from Actelion; AB Science; Allergan; Amgen; Bayer; Biogen; Celgene; Genesis Pharma; Roche; Eli Lilly; Merck-Serono; Mylan; Novartis; Receptos; Sanofi-Genzyme; and Teva;

  • Dr. Themistoklis Kalamatas has no disclosures.

  • Prof. Evangelia Kararizou has received advisory fees, or travel grants from Genesis Pharm; Novartis; Sanofi-Genzyme; and Teva Pharmaceuticals.

  • Dr. Dimitrios Naoumis has received advisory fees and travel grants from Novartis, Merck, Sanofi, Genesis, TEVA, Specifar, Pharmathen and Innovis.

  • Prof. Dimos D. Mitsikostas has received advisory fees, honoraria, research grants, and/or travel grants from Allergan; Amgen; Biogen; Cefaly; electroCore, Inc.; Genesis Pharma; Eli Lilly and Company; Merz Pharma; Mylan; Novartis; Roche; Sanofi Genzyme; and Teva Pharmaceuticals. He has been the primary investigator for Amgen, electroCore, Eli Lilly and Company, Novartis, and Teva trials. DDM is the current president of the Hellenic Headache Society and has no ownership interests and does not own any pharmaceutical company stocks.

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Kouremenos, E., Arvaniti, C., Constantinidis, T.S. et al. Consensus of the Hellenic Headache Society on the diagnosis and treatment of migraine. J Headache Pain 20, 113 (2019).

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  • Hellenic headache society
  • Consensus
  • Migraine
  • Treatment


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